Arched Island Weather Forecast

    • 5
    • 14

    Shower or two. Windy

    • 7
    • 16

    Partly cloudy

    • 5
    • 17

    Partly cloudy

    • 6
    • 18

    Partly cloudy

    • 11
    • 20

    Shower or two

    • 9
    • 14

    Shower or two

    • 6
    • 14

    Partly cloudy

Today 21 Sep South East

Partly cloudy. High chance of showers in the far south, medium chance elsewhere. Snow falling above 700 metres. The chance of a thunderstorm in the far south. Possible small hail. Winds westerly 30 to 45 km/h.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 30 to 40 knots.
Seas
3 to 4 metres.
1st Swell
Southwesterly 4 to 6 metres.
Weather
Cloudy. 90% chance of showers. The chance of a thunderstorm. Possible small hail.
Weather Situation
A high pressure system centred over the Bight is expected to move to the north of Tasmania on Tuesday morning and lie over the northern Tasman Sea during Wednesday and Thursday, maintaining ridge dominated conditions over Tasmania. A trough is forecast to move over the state from the west during Friday ahead of a cold front to cross later.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Arched Island Temperature Statistics View More

September Temperature

Cape Bruny (16km)

  • Lowest 16 September, 2026

    4.5 °C

  • Average September

    11.5 °C

  • Highest 19 September, 2026

    21.4 °C

Climate (2021–2026)

Cape Bruny (16km)

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  • Average Low 2021–2026

    9.6 °C

  • Average 2021–2026

    12.5 °C

  • Average High 2021–2026

    16.6 °C
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